diff --git a/source/_components/sensor.arest.markdown b/source/_components/sensor.arest.markdown
index 70d83a25ee1..7558394c341 100644
--- a/source/_components/sensor.arest.markdown
+++ b/source/_components/sensor.arest.markdown
@@ -35,7 +35,7 @@ Configuration variables:
 - **name** (*Optional*): Let you overwrite the the name of the device. By default *name* from the device is used.
 - **monitored_variables** array (*Optional*): List of exposed variables.
   - **name** (*Required*): The name of the variable you wish to monitor.
-  - **unit** (*Optional*): Defines the units of measurement of the sensor, if any.
+  - **unit_of_measurement** (*Optional*): Defines the units of measurement of the sensor, if any.
   - **value_template** (*Optional*): Defines a [template](/topics/templating/) to extract a value from the payload.
 - **pins** array (*Optional*): List of pins to monitor. Analog pins need a leading **A** for the pin number.
   - **name** (*Optional*): The name of the variable you wish to monitor.